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Study of a liquid crystal structure with improved electro-optical characteristics
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10.1063/1.3013434
/content/aip/journal/jap/105/1/10.1063/1.3013434
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/1/10.1063/1.3013434

Figures

Image of FIG. 1.
FIG. 1.

Schematics of a VPS-LCD for an IB energy of 700 eV, an incident angle of , and an exposure time of 60 s. The inset shows the image of the patterned ITO electrodes with the alignment direction on the bottom glass substrate. The width of the patterned ITO electrodes is and the gap of the electrodes is .

Image of FIG. 2.
FIG. 2.

Pretilt angles of the IB-irradiated homeotropic PIs as a function of the IB exposure time, for an exposure intensity and irradiation angle of 700 eV and , respectively. The results include error values.

Image of FIG. 3.
FIG. 3.

XPS spectra for the peaks from the homeotropic PIs after IB irradiation at exposure times of (a) 0 s, (b) 30 s, and (c) 60 s for an exposure intensity and IB irradiation angle of 700 eV and , respectively.

Image of FIG. 4.
FIG. 4.

(a) The voltage-transmittance curve of the VPS-LCD at an IB energy of 2500 eV, incident angle of , and exposure time of 60 s, with images also shown as a function of applied voltage. The pretilt angle of the cell was approximately . (b) The rise times of the two LCDs at an IB energy of 700 eV, incident angle of , and exposure time of 60 s.

Image of FIG. 5.
FIG. 5.

Light transmission as a function of voltage for (a) VPS-LCDs with various exposure times and (b) IPS-LCDs. The inset represents the off-state brightness of each VPS-LCD (7 s with , 15 s with , 25 s with , 30 s with , and 60 s with pretilt angles).

Image of FIG. 6.
FIG. 6.

Simulations of transmittance (%) using (a) a LC cell gap with a fixed pretilt angle of and (b) a pretilt angle with a fixed cell gap of . The inset represents the plot of birefringence vs pretilt angle.

Image of FIG. 7.
FIG. 7.

(a) RT as a function of applied voltage for VPS-LCDs with various exposure times. (b) Comparison among the total RTs with VPS-LCDs. The inset to Fig. 7(b) shows the rise and fall times.

Tables

Generic image for table
Table I.

Pretilt angles and total RT characteristics of VPS LCDs for various exposure times and energy.

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/content/aip/journal/jap/105/1/10.1063/1.3013434
2009-01-07
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Study of a liquid crystal structure with improved electro-optical characteristics
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/1/10.1063/1.3013434
10.1063/1.3013434
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